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REVENUE - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue [Line Items]      
Net sales $ 734,902 $ 704,542 $ 579,476
Shipping and Handling      
Disaggregation of Revenue [Line Items]      
Net sales $ 3,600 $ 3,500 $ 2,700